Stage 1 Performance Kit for 301/420cc Engines

The Stage 1 Performance Kit for 301/420cc Engines is the perfect upgrade for anyone looking to boost their engine's performance. This kit includes a high-quality air filter, air filter adapter, and a jet kit, all designed to work together to improve the power and efficiency of your engine. The air filter is made from premium materials and provides superior filtration, while the performance exhaust header improves exhaust flow for increased power and torque. The jet kit provides optimized fuel delivery to match the increased airflow, resulting in a noticeable improvement in performance. With easy installation and a perfect fit for your 301/420cc engine, this kit is a must-have for anyone looking to take their engine to the next level. Upgrade your engine's performance today with the Stage 1 Performance Kit for 301/420cc Engines!

Our Stage 1 Performance Kit is very popular and includes a K&N style high flow air filter, aluminum air filter adapter, and an upgraded drilled main jet for the carburetor. This kit is a simple but very effective upgrade over the stock air box. This kit needs to be paired with an aftermarket header for it to work properly. With the added air flow, the more rich main jet is mandatory for optimal engine performance.  Filter inlet measures 2 7/16" ID and 2 7/8" OD. Includes choke hold bracket as well. Kits will ship with the air filter and air filter cover color we have in stock at the time.

Kit Includes:

• Air Filter (Color Varies)
• Air Filter Cover (Color Varies)
• Air Filter Adapter (Color Varies)
• Either a 301 or 420 Jet
• Carburetor Gaskets

• Honda GX240 & GX270
• Predators Engines 301cc & 420cc
• Duramax 18HP Engine

Recommended Items:

• 301/420 Exhaust Gasket
• Vent Filter Kit
• 50# Valve Springs (if taking the governor out)
• Header Pipe for 301/420 Engines

#KDPRED301-420AF